D20/22 Form Tie Rod
D20/22 all-thread rod, 2.60 kg/m, tested tensile 210–240 kN by material.
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1 / 1Form Tie Rod Series
D20/22 Form Tie Rod
D20/22 all-thread form tie rod at 2.60 kg/m for heavy wall formwork and high pour rates. Tested tensile capacity by material: Q235 210 kN and 45# 240 kN (2026 catalogue data). Threads produced by CNC thread rolling; cut to length from 200mm to 8000mm with plain, electro-galvanized, hot-dip galvanized or Dacromet finishes.
Specifications
- D20/22 all-thread rod, 2.60 kg/m
- Tested tensile: Q235 210 kN · 45# 240 kN (2026 catalogue)
- Length 200–8000mm, cut to length
- Q235 / 45# carbon steel
- Plain, electro-galvanized, HDG or Dacromet
Prices are quoted based on product specifications, material/grade, quantity, destination and current market conditions. Contact us for the latest quotation.
Engineering-reviewed quote within 24 hours.
Technical Specifications
| Thread | D20/22 all-thread |
| Load Rating | Tested tensile 210 kN (Q235) / 240 kN (45#) |
| Grades | — |
| Material | Q235 / 45# carbon steel |
| Length | 200–8000mm, custom cut-to-length |
| Surface | Plain, electro-galvanized (8–25µm), HDG (45–85µm), painted, Dacromet |
| Packaging | Bundled on pallet, VCI wrap, seaworthy cartons |
MaterialQ235 · 45# carbon steel
Surface FinishPlain (black) · Electro-galvanized · Hot-dip galvanized · Dacromet
Rated LoadTested tensile: Q235 210 kN · 45# 240 kN (2026 catalogue)
Unit Weight2.60 kg/m
PackagingBundled on pallet · VCI wrap · seaworthy cartons · marked per BOM
Production Process
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06Material Grades Explained
| Grade | Notes |
|---|---|
| Q235 | Plain carbon steel. Economic option for light and medium formwork loads. Not heat treated. |
| 45# | Medium carbon steel. The standard formwork tie rod grade in China; quenchable to class 8.8. |
| 40Cr | Alloy steel. Higher hardenability and better fatigue performance than 45#; used where repeated reuse matters. |
| Class 10.9 bolt | Quenched and tempered alloy steel bolt used in the climbing cone set. Not electroplated without a documented baking cycle. |
| QT450-10 | Ductile (nodular) iron with 450 MPa tensile and 10% elongation. Used for sleeves and embedded plates where toughness and castability matter. |
| HRB400 | Hot-rolled ribbed bar (threaded steel) to Chinese standard. Used for embedded foot bolts; good bond with concrete. |
Applications
Procurement Guide
- Confirm diameter, material and required tensile load with your structural engineer
- Match nuts, cones and sleeve threads to the rod before ordering
- Request mill certificates (EN 10204 3.1) for structural applications
Procurement Information
- OEM / Custom
- Own drawing or label welcome
- MOQ
- Trial orders OK · mixed SKU welcome
- Lead time
- Stock 3d · Custom 7-15d
- Packaging
- Seaworthy: pallet + strapping + waterproof
- Payment
- T/T · L/C at sight
- Incoterms
- FOB Tianjin · CIF · CFR · EXW
Related Technical Reading
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Technical FAQ
D20/22 Form Tie Rod — Answers for Engineers and Buyers
It consists of two reusable outer threaded bars, two plastic cones and one embedded middle bar with a welded water-stop plate. After stripping, the two outer bars are unscrewed and reused on the next pour; only the middle section stays inside the wall. This keeps consumable cost low while producing a watertight wall penetration.